Re: How come Linux/Unix filesystems don't seem to get fragmented?

On Dec 4, 1:43 am, fl...@apaflo.com (Floyd L. Davidson) wrote:
> Ramon F Herrera wrote:
>
>
>
> >Some people define intelligence as the ability to find relationships,
> >btw.
>
> So the inability to relate your posts to the topic of
> discussion, the article you reply to, or anything else
> with a relationship to the newsgroups you posted in, is
> only because you lack intelligence. That's good, cause
> I was about to think there were other things wrong with
> you.
>
> --
> Floyd L. Davidson
> Ukpeagvik (Barrow, Alaska) fl...@apaflo.com

UFS will do partial block fills if both files can fit in the same
block. If either file is extended, the quiet roommate file is
relocated and the growing file will get the entire block to itself.
Files that span multiple blocks are not necessarily contiguous - in
that sense they can become "fragmented".

Don't go there. I just learned something at an AIX Admin class that not
only floored me and my fellow "soon-to-be-AIX VMS Guys" it caused me to
lose a great deal of respect for AIX and IBM. We could easily get into a
deeply "religious" flame war about which is better.

The truth is, of course, neither is "better" - the intentions of the
respective designers were radically different. One fits one purpose, the
other fits a different purpose.

....and to the OP's point, "fragmentation" has an entirely different
meaning in AIX. What he means is "discontiguity of extents", both
allocated and free space.

David J Dachtera
DJE Systems

Re: How come Linux/Unix filesystems don't seem to get fragmented?

heh, I've been in a few classes with an IBM instructor who swears that
"Fragmentation is good and we had it first!" .

Most people are talking about discontinuous files when they talk about
"fragmentation".

Yea so he is mostly being anal about terms, but not really, we have
less discontinuous filesystems because of good fragmentation.